Centrifugal pump.



PATENTED MAR. 3, 1908.

L. R. ALBERGER. GENTRIFUGAL PUMP. APPLICATION FILED MAY 1,1905.

I 2 SHEETS-SHEET 1.

PATENTED MAR. s, 1908.

L, R. ALBBRGER. CENTRIFUGAL PUMP;

APPLIGATION FILED MAY 1,1905

2 SHEETS-SHEET 2.

i wi tmaoow UNTTED STATES PATENT LOUIS R. ALBERGER, OF GREENWIOH, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS, .TO ALBERGER PUMP COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CE NTBIFUGAL PUMP.

Specificationpf Letters Patent.

Patented March 3, 1908.

Application filed May 1, 1905. Serial No. 258,354.

To all whom "it may concern:

Be it known that I, Louis R. ALBERG ER, a citizen of the, United States of America, and a resident of Greenwich, in the county of Fairlield, Stateof Uonnecticut, have invented certain new and useful Improvements in Centrifugal Pumps, of which the following is a specification.

My present invention relates to centrifugal or turbine pumps, and to a method and means of operating the same in cases where a large quantity of water or other fluid is to be lifted against a low head, and where the operating means consists of a motor having a high rotative speed.

The object of the invention is to accomplish such a lift economically and el'lectively by a simple, novel and useful method and means; and the invention consists primarily in the method of causing the flow of a portion of the fluid by the inductive action thereon of the remainder, or, in other words, of dividing the fluid to be pumped into two portions, one of which will act inductively on the other so as to cause a joint discharge of the whole against a low head; and the invention also consists in the means for performing this operation and in various detailsand peculiarities in the construction of a. centril'ugal or turbine pump for gaining distinct advantages over what has heretofore been possible with hnown forms of pumps, substant ially as will be hereinafter described and claimed.

In the accompanying drawing illustrating my invention; Figure 1 is a side elevation of my improved centrifugal or turbine pump. Fig. 2 is a horizontal section of the same. Fig. 3 is an elevational view of a somewhat modified form of the invention showing a dit- 'l'crent runner or impeller and a different l ind of inlet, and also showing how the pump motor is directly attached to the driving shalt.

Similar numerals of reference designate corresponding parts throughout the ditlerent figures.

In the pumping of water by means'of centrifugal or turbine pumps, there are found many cases where a large quantity'of Water is to be lifted against a low head, and where it is desirable to use various kinds of high speed motors for driving the pumps. When having the inlet pipes 2, 2,

such motors are steam turbines depending upon a high rotative, speed for etficienoy and economical production of power, it has been necessary to reduce the speed by means of gearing .or other devices, so as to bring it down Within the possibilities of the centrifugal pump. Right here, it is proper to remarr that in an etficient and properly designed centrifugal pump, the peripheral s eed of the runner of the pump bears a deti iiite and direct relation to the head against which the pump is to deliver; consequently, with a low head to pump against and a high speed of rotation, the proper diameter of the runner or impeller is quite small and might be less than the diameter of the supply pipe conveying water to the pump, whic 1 would, of course, be an impossible and useless construction; and hence it has been found necessary, either to employ a larger runner at a great sacrifice of eflioiency, or to restrict the opening through which the water is supplied to the pump at a similar sacrifice of el'l'iciency, or to resort to devices consisting of gearing or belting, or other means for reducing the speed of rotation. Hence, the object of the present invention, in producing an effective pump, is to make it capable of the very high rotative speed and suitable to be driven directly from the shaft of a steam turbine or an electric motor, or other high speed prime mover. I propose to accomplish this result by dividing the amount of water to be pumped into two portions, one of which is supplied to a runner larger in diameter than that required for the pumping head and having a peripheral speed suflicient to discharge against a head greater than the final pumlping head, and to cause this portion of tie water to come into contact with the second portion of water in such a manner as to im part to the latter a velocity suthcient to discharge both portions of water jointly against the final or required head.

1 denotes the discharge passage, volute, or casing, within which a runner or impeller, as 5, having any suitable design and construc tion, operates and delivers, said discharge passage having a discharge opening 4 and through which the Water flows from the inlet 3 to both sides of the runner 5. Runner 5 is secured on the shaft 6, supported in bearings7, 7, and suiti also t e inlets and outlets.

peller may be open or inclosed, or turbine or.

first portion of of the nozzle in which runner rotates 'The invention is so difference what the particular form of the mover which may In Fig. 3, 10 desigwhich applies its ably driven by any prime apply its power thereto. nates a steam turbine, ower to the shaft 9, on which is the runner'or impeller 8, which dischargesinto the discharge passage 1. In this figure, 3 designates the inlet through which water flows into the passages 2 and finds entrance at both sides to the runner 8. Runner 8 is of a different construction from runner 5, and is iven here simply by way of furnishing an additional example of means; also the pump construction inFig. 3 is slightly modified from that in Figs. 1 and 2, in order that a variation in the exemplification of theinvention may be offered to assist further in explanation of the ideas and principles of my ini rovement.

onsidering now, either the runner '5 which discharges into the passage 1, or the runner 8 which discharges into the passage 1, it will be understood that these runners are both driven at a very high rate of speed by means of the prime mover, as 10, which is a steam turbine, or which may be an electric motor or some other high-speed en ine. broad that it makes ittle may be, or what the shape of the adjunctive parts of as the discharge runner or impeller and arrangement be, inasmuch assa 'e may vary as widely Hence, the impropeller blades may be used, or any other type of runner may be employed to put the water in motion. The form the inductive action takes place may 'be diiierent from that shown and may be varied to meet all sorts of conditions. Remembering now that the at a very high speed and that there is a direct relation between its peripheral speed and the head against which the pump is to deliver, and also that the quantityof water is large, and the head to be lifted against'is low, I divide the water into ortions and the relative proportions of the "17st and second portions of water will depend upon the exact quantity of water and head to be pumped, and the exact number of revolutions per minute at which the ump is to be driven. In explaining how the water is divided into two portions, take a concrete illustration: Suppose, for instance, the quantity of water is 20,000'gallons per minute, the head 10 feet, and the revolutions 3,000 per minute. In this case the first portion of water may be 4,000 gallons per minute discharged from of 50 feet, which will be sui'ficient when the excess power is im )arted to the remaining 16,000 gallons, to eliver the entire amount as desired, and

the runnerat a speed sufficient to deliver against a head l coining esaeee of 20,000 gallons 10 feet high. With different conditions from those just given, the first portion of water may be one-half or more of the total, and it may equal to double or less than double that necessary to discharge the whole quantity the required height.

The runner 8 in Fig. 3 has, at its periphery, an orifice or openin 11, W1 livers directly into the disc arge passage 1, and at the sides of the runner 8 are openings 12 which likewise permit a at the sides of the impeller into the discharge passage 1. Obviously, when the water is divided into two parts in accordance with.

have a velocity iich de-- I flow of the water comes in .contaet, so'that a flow of said latter water takes place through the openin's 12; thus both portions of the-water, one irectly move and the other inductively moved, pass together into the discharge passage 1 and the speed of flow is of such a degree as to cause all the water to be de livered to the required head, all the parts being properly proportioned to bring about this result. Referring to Fig. 2, it will be seen that the runner 5 likewisehas a discharge orifice or orifices 13 which deliver into the discharge passage when pumping thereinto that ortion of the water which is directly moved: while the inductively flowing water passes into the discharge way through the side passages 14 at the sides of the impeller 5.

So many changes in the details of the various mechanical parts may be made that I reserve the liberty of modifying the same within very wide limits, provided only the desired results are obtained.

In some instances, as for example in that 2, the

l ig.

form of the invention shown in impeller directly moves a portion of the water and delivers it into the discharge way, and at the same time an inductive action on the second portion of water is brought about and therewith also more or less of a direct action against the second portion of water, so that in this case it may be said thatone portion of the fluid or liquid is pumped by direct action and another portion is moved jointly by direct action and inductive action. lhis direct action last referred to upon the second portion of the fluid or liquid is obviously caused by the frictional action of the outside of the impeller, against the watei through the passage.

\ It will of course be understood in speak in l which the water is head t that th head and g of pumping lifted or delivered ceases pumps may equally well deliver against a pressure equivalent to the pumping head with the same etlect and results, w th only 'a partial or even withoutany actual elevation of the water.

llaving thus described my invention, what 1 claim as new and desire to secure by Letters Patent, is:-

l. The herein described method of operating centrifugal and lile pumps, consisting in moving one portion of the fluid or liquid by direct action, and another portion by inductive action, the entire operation taling place within a single inclosure through which all the water passes and before any of the water leaves it.

The herein described method of operating centrifugal and like pumps, consisting in moving one portion of the fluid or liquid by direct action, and another portion both by direct action and also by the inductive action of the first portion, the entire operation tal ing place within a single inclosure through which all the Water passes and before any of the water leaves it.

3. The herein described method of operat ing centrifugal and like pumps, consisting in lifting a portion of the water or other liquid to be pumped by exerting a direct action thereon, and lifting the remainder both by direct action and also by theinductive action of the first portion thereon, the entire opera-- tion ta ing place within a single inclosure through which all the Water passes and before any of the water leaves it.

4. The herein described method of operating centrifugal and lil'e pumps, which consists in moving a body of liquid by centrifugal force and moving another body of liquid by the motion of the, former, the entire operation ta 'ing place within the pump through which all the water passes and before any of the water leaves it.

5. The herein described method of operating centrifugal and like pumps, which consists in imparting power to a body of liquid by the action of centrifugal force, and then imparting a portion of the power to another body of liquid, so as to obtain allow of both liquids, the entire operation taking place within the pump througl'l which all the water passes and before any of the water leaves it. v

6. The herein described method of operating centrifugal pumps which consists in causing the pump impeller to directly nove a portion of the Water, and causing the portion so moved to inductively act upon and move another portion flowing outside the impeller, the entire action occurring Within the pump and before any of the water leaves it.

7. The method of operatingcentrifugal pumps which consists in directly imparting driven centrifugal pumps which consists in,

pumping one portion of the liquid by direct action and the balance by the inductive action of the first portion, the entire operation ta ing place within a single inclosure through which all the water passes and before any of the water leaves it.

9. The herein describedv method. of operating centrifugal and like pumps, consisting in pumping a portion of the Water directly in the midst of the entire volume of water to be pumped so as to induce a flow of the water which is not directly acted on, the entire operation taking place within a single inclosure through which all the Water passes and before any of the Water leaves it.

10. The herein described method of operating centrifugalfirnd like pumps, for lifting a large quantity of Water or other liquid against a low head, consisting in directly moving a portion of the Water at a higher rate of speed than is necessary to overcome the final'head, said movemcnt being in the midst of the entire quantity of water so that the second portion thereof may be inductively caused to flow, for the purpose of obtaining'a discharge of the Whole at the desired head, the entire operation taking place within the pump through. which all the Water passes and before any of the water leaves it.

1]. The herein described method of operating centrifugal and like pumps, for pumping a large quantity of Water against a low head, consisting essentially in moving a portion of the water at high speed, in the midst of the quantity being pumped, which highspeed-moving portion inductively causes a flow of the remainder, so that the speed of the two portions is equalized and the final discharge is made at the desired head, the

entire operation taking place within a single inclosed boundary through. which all the water passes and before any of the Water leaves it.

12. In a centrifugal or like pump, the com bination with a runner or impeller, of means for introducing water at both sides, means for rotating the runner at high speed and means for permitting the water to pass around the impeller from the supply to the. discharge, whereby a part of the water is directly pumped and the remainder is caused inductively to flow, the entire operation taking place within the pump inelosure.

13. In a centrifugal or like pump, the combination with a runner or impeller, of

means for rotatin the 1 5 peller be a delivery passage at the side of the imsupplying water to the runner, and. means may act directly on a having an impeller, the combination with a discharge way, of an inlet, and means whereby part of the Water passes by the impeller from the inlet to the discharge without passing through the impeller, all arranged so that a portion of the water is directly pumped, and a portion inductively pumped y the first portion, the entire operation taking place within the pump inclosure.

20. In acentrifugal, turbine, or like pump, the combination with a runner or impeller, of a discharge way, an inlet, and a passage outside the impeller from the inlet to the discharge, so that said impeller may act directly on-a portion of the water, which directlynioved portion acts inductively on the re mainder, the entire operation taking place within the pump inclosure.

means for introducing water at one side, means for rotating the runner at hi h speed, a discharge into which the water is delivered, and a passage outside the impeller from the supply to the discharge, whereby'a part of the Water is directly pumped and the remainder is caused inductively to flow, the entire operation taking place within the pump inclosure. i i v 14. n a centrifugal or like pump, the combination with a runner or impeller, of runner at high speed, a discharge, an in et, all arranged to permit the flow of the water from the supply to the discharge to pass partly through the imand partly outside of it, whereby a part of the water is directly pumped and. the remainder is caused inductively to flow, the entire [operation taking place within the pump inclosure.

15. In a centrifugal or like pump, the combination with a runner or impeller, and a discharge passage into which it delivers, of means for supplying water to the im-. peller, at both sides, means for permitting water to ass at both sides of the impeller into the ischarge way, so that the impeller portion of the water, while the rest of-the Water is caused to flow by induction, the entire operation taking place within the pump inclosure.

16. In a centrifugal or like pump, the combination with an impeller, and a' discharge combination of a casing, an impeller or runner, means for actuating it at a high speed, a discharge, an inletfa water passage from the inlet to the discharge outside the impeller, the water being; drawn through said passage by the inductive action of the water which is directly pumped by the centrifugal motion of the impeller, the entire operation taking place within the pump inclosure.

22. In a centrifugal, turbine, or like pump, having a runner or impeller, a discharge way into which a portion of the water is directly pumped by the centrifugal action of the impeller, an inlet supplying liquid to the imthe portion of-the way, said discharge way being so located peller, and means allowing relatively to the impeller that the latter may water not passing through the impeller to pass from said. inlet to the discharge, said latter portion of water being inductively acted upon by the directly-1 umpcd portion, the entire operation taking place within the pump inclosure.

23. in a centrifugal or like pump, the com bination with an impeller, of means for rotating it, a discharge, an inlet, all arranged to permit the l low of the water from the supply to the discharge to pass partly through the impeller and partly outside of it, whereby a part of the water is directly pumped and the remainder is caused to flow inductively and. also by direct action, the entire operation taking place within the pump inclosure.

24. In a centrifugal or like pump, the combination of a runner or impeller, of means for introducing water at the side, means for rotating the runner, and means for permitting the water to pass around the impeller from the supply to the discharge, whereby a part of the water is directly pumped and the ren'iainder is caused to flow both by the direct action of the impeller thereon and also by the inductive action of the first portion of water, the entire operation taking place within the pump inclosure.

25. In a centrifugal, turbine, or like pump,

deliver directly thereinto and there may also peller into the discharge way, means for supplying water to the 'impeller, so that said impeller may act directly on a portion of the water, which directly-moved portion acts inductively on the remainder, the entire operation taking place within the pump inclosure.

17. In a centrifugal pumping unit, the combination of a steam turbine supplyingpower to a runner, of means supplying two bodies of liquid, one acted upon by the runner and the other by the liquid discharged by the runner, the entire operation taking place within a single pump inclosure through which all the water passes and before any of the water leaves it.

18. A centrifugal pumping unit, consisting in the combination with a runner, of a steam turbine driving the same, means for for allowing a lateral pass of the water by the runner, so that one body of water may be acted on by the runner and another body by the water directly discharged by said runner, .the entire operation taking place within the pum inclosure.

19. In a centrifugal, turbine, or like pump,

21. In .a centrifugal pumping unit, the

having an impeller, the combination with I inductive action of the first portion of Water a discharge-wry, oi an inlet, and means thereon. 1 whereby pert oi the Water passes by the im- Signed at New York this 27th day of April, peller from the inlet to the discharge Without 1905.

5 }mssing through the impeller, all arranged LOUIS It. A JBERGE R. so that a portion of the Water is directly Witnesses: pumped by the impeller, and a portion Ron'r. R. RAINEY,

pumped jointly by'direet action and by the B. W. PinnsoN. 

